<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>test</title>
</head>
<body>
  <div id="testDiv" data-lei="leisuchu">

  </div>
</body>
<script lang="ts">
  const testDiv = document.getElementById('testDiv')
  testDiv.dataset.testv = 'nakrua'
  console.log(testDiv.dataset);
</script>
</html>
